Oppo R9s Plus Firmware Qfil -

: Turn off your Oppo R9s Plus. Press and hold the Volume Down and Volume Up buttons simultaneously, then connect your device to the computer using a USB cable. This usually puts your device into EDL (Emergency Download) mode, which is required for QFIL to detect it.

: Usually included within the QPST Tool package . Oppo R9s Plus Firmware Qfil

for the latest official R9s Plus firmware versions or specific help with a "Sahara" error : Turn off your Oppo R9s Plus